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The LUVOIR Mission Concept Study Final Report (1912.06219v1)

Published 12 Dec 2019 in astro-ph.IM

Abstract: The Large UV/Optical/Infrared Surveyor (LUVOIR) mission is one of four Decadal Survey Mission Concepts studied by NASA in preparation for the US National Academies' Astro2020 Decadal Survey. This observatory has the major goal of characterizing a wide range of exoplanets, including those that might be habitable -- or even inhabited. It would simultaneously enable a great leap forward in a broad range of astrophysics -- from the epoch of reionization, through galaxy formation and evolution, to star and planet formation. Powerful remote sensing observations of Solar System bodies will also be possible. This Final Report on the LUVOIR study presents the scientific motivations and goals of the mission concept, the engineering design, and technology development information. Please refer to the LUVOIR Final Report Appendices (separate document) for additional information.

Citations (129)

Summary

  • The paper outlines LUVOIR's ambitious objectives including the search for biosignatures and detailed characterization of exoplanetary atmospheres using high-contrast imaging and spectroscopy.
  • The paper describes advanced technological innovations such as high-contrast coronagraphs and ultra-stable segmented telescopes essential for precise astronomical observations.
  • The paper highlights LUVOIR's potential to transform understanding of cosmic structure and planetary evolution, paving the way for new astrophysical inquiries.

Overview of the LUVOIR Final Report

The LUVOIR Final Report outlines a comprehensive exploration of the scientific potential of the Large UV/Optical/Infrared Surveyor (LUVOIR), a proposed space observatory designed to reshape our understanding of life in the universe, cosmic structure, and planetary evolution. The report provides a detailed account of the mission's scientific objectives, technological innovations, and potential impact across multiple domains of astrophysics.

Scientific Objectives

LUVOIR is envisaged as a versatile astronomical observatory capable of addressing a wide range of scientific questions. Its primary science goals include the search for biosignatures on exoplanets, characterization of diverse planetary atmospheres, probing the formation and evolution of planetary systems, and mapping cosmic structure across various scales.

Exoplanetary Science

The search for life on exoplanets is a core objective of LUVOIR. The mission aims to assess the habitability of Earth-like exoplanets around Sun-like stars using high-contrast imaging and spectroscopy. By characterizing the atmospheric composition of these planets, LUVOIR seeks to detect biosignature gases such as oxygen and methane, providing clues to the existence of life beyond Earth. The report highlights that LUVOIR could detect dozens of potentially habitable planets, significantly enhancing our understanding of planetary diversity and habitability.

Comparative Planetary Atmospheres

LUVOIR's access to a broad wavelength range from the ultraviolet (UV) to the near-infrared (NIR) allows for comprehensive studies of planetary atmospheres. This capability is crucial for understanding the composition, dynamics, and evolution of both gas giants and smaller terrestrial planets. The mission will provide insights into atmospheric processes such as photochemistry, cloud formation, and escape mechanisms, which are vital for constraining planet formation theories and atmospheric models.

Cosmic Structure and Galaxy Evolution

Beyond planetary science, LUVOIR aims to probe the building blocks of cosmic structures and the evolution of galaxies. By studying the intergalactic medium and its interaction with galactic halos, the mission seeks to unravel the processes that drive galaxy formation and evolution. LUVOIR will also investigate the impact of ionizing radiation on cosmic structure, providing key insights into the physics of the early universe.

Technological Innovations

The LUVOIR report outlines key technological advancements essential for achieving its ambitious science goals. Among these innovations are high-contrast coronagraphs for direct exoplanet imaging, ultra-stable segmented telescope systems for maintaining precise wavefront stability, and high-resolution UV instrumentation for probing gas dynamics and chemical compositions in various astrophysical environments.

LUVOIR's design includes two primary concepts: LUVOIR-A, with a 15-meter aperture, and LUVOIR-B, with an 8-meter aperture. These designs emphasize modularity and serviceability, ensuring adaptability to future technological developments and potential on-orbit servicing missions.

Implications and Future Prospects

The proposed capabilities of LUVOIR present significant implications for the future of astrophysics. The mission has the potential to provide transformative insights into the frequency and diversity of life-supporting environments, the processes governing planetary and stellar evolution, and the fundamental physics shaping the universe. LUVOIR's findings will not only answer longstanding questions but also pave the way for new lines of inquiry in the coming decades.

In summary, the LUVOIR Final Report details a visionary mission that promises to extend the frontiers of human knowledge across multiple astrophysical domains. Its comprehensive approach to exploring the universe's complexities underscores the mission's potential as a flagship observatory for the 21st century. As we seek to understand our place in the cosmos, LUVOIR offers a promising pathway to discovering the intricate tapestry of life and matter in the universe.

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